How do you find the issue in the drawing with the entity handle?

How do you find the issue in the drawing with that code? For example, 12db0.

The hex value “12db0” is the entity handle for the boundary polyline within the drawing. To see which boundary this is within your drawing, you can select or zoom to it within your drawing. Refer to the Autodesk Knowledge Network: Selecting or zooming to an entity based on its handle identification code. The error is generally caused by the boundary polyline not containing a room name label (on the layer you have specified for labels).